CN101865761B - Ship-bridge collision experiment pool - Google Patents
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- CN101865761B CN101865761B CN 201010213892 CN201010213892A CN101865761B CN 101865761 B CN101865761 B CN 101865761B CN 201010213892 CN201010213892 CN 201010213892 CN 201010213892 A CN201010213892 A CN 201010213892A CN 101865761 B CN101865761 B CN 101865761B
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Abstract
The invention discloses a ship-bridge collision experiment pool, which comprises a pool, longitudinal rails are arranged on both sides of the pool, a ship model-dragging mechanism is transversely arranged on the two longitudinal rails, and comprises longitudinally travelling trolleys, transverse rails and transversely moving units, wherein the longitudinally travelling trolleys are arranged on the two longitudinal rails, and can carry the whole ship model-dragging mechanism to move along the longitudinal rails, the transverse rails are arranged on the longitudinally travelling trolleys, the transversely moving units are arranged on the transverse rails, and can move along the transverse rails, and a fixing unit for fixing a ship model is mounted under the transversely moving units, and can rotate. After a simulative pier, a simulative anti-collision device and a ship model are mounted in the ship-bridge collision experiment pool, the state of the bridge collision of the underway ship can be simulated by controlling the speed of the longitudinally travelling trolleys of the ship model-dragging mechanism, the positions of the transversely moving units and the angle for turning the advancing ship model. The data measured by the simulation experiment can be analyzed by a computer to judge the effectiveness of the anti-collision device, and thereby the effectiveness of the anti-collision device can be more reliably and reasonably judged.
Description
Technical field
The present invention relates to the experimental tank of the crashproof safety guard research and design use of ship colliding pier.
Background technology
The accident that a lot of ships hit bridge also takes place from having built a lot of bridges after the founding of the state in China.The ship that occurs in Wuhan Yangtze River Bridge since nineteen fifty-nine hits the bridge accident, by 2002, nearly more than 300 ships has taken place on the Changjiang River Trunk Line successively hit the bridge accident.Ship hits the bridge accident Wuhan Yangtze River Bridge has taken place 70 since building up surplus, and Nanjing Yangtze River Bridge nearly 30 ships has also taken place hit the bridge accident.The scratch of these accidents the lighter bridge bridge pier, weight person's bridge is badly damaged, boats and ships topple, casualties.According to statistics, the ship that takes place at Wuhan Yangtze River Bridge hits in the bridge accident, and direct economic loss surpasses 1,000,000 major break down above 10.In morning on June 15th, 2007, national highway 325 Guangdong section Jiujiang Bridge generation ships hit the bridge accident, cause the about 200 meters bridge floors of 325 national highway Jiujiang Bridge to cave in, and direct economic loss surpasses ten million.These accidents cause tremendous loss to the people's lives and property, therefore study bridge anti-collision device and are very important.
It is the dynamic mechanical process of a complexity that collision avoidance system is subjected to ship collision, collision is the instantaneous process of a millisecond (ms) to second (s) magnitude, the dynamic process that comprises the huge energy exchange in this process is the shock dynamics problem of a complexity and difficulty in essence.
The existing method of analyzing ship impact force has two big classes: method for normalizing and computing machine finite element simulation analytical approach.
In method for normalizing, commonly used in the Bridge Design standard both at home and abroad have 5 kinds of formula, be respectively Chinese highway modular formula, Chinese Railway modular formula, Min Nuosiji-Jie Le-Wo Yi sweet-smelling grass (Minorsky, Gerlach, Woision) formula, that (Saul-SveIson of Sol-Nuo Te-Green, Knott, Greiner) formula, the formula of u s. state highway and transport NAB National Association 0f Broadcasters (AASHTO).These computing formula all are to be based upon the semiempirical formula that remakes some corrections on the Simple Theory basis that ship hits the rigid body of bridge (or ship crashes) or the whole collision of elastic body in essence, this class semiempirical formula belongs to the quasistatic of coming out from elastic system energy (or momentum) conservation to be simplified and analyzes, and is used to explain that the dynamic mechanical process is not right.
The general computational analysis of ANSYSLS-DYNA program, the also possibility of existence calculating rreturn value error of adopting in computing machine finite element simulation analytical approach.
The shock dynamics theory from many-sided factors such as stress wave propagation, material strain rate effects in conjunction with solving the shock dynamics problem.From the stress wave propagation, the dynamic load that clashes into the interface is to determine jointly by rammer and by the ripple communication process that is coupled mutually in the rammer (containing collision avoidance system), and that the detailed process that ripple is propagated is then looked the structure of boats and ships, bridge pier and collision avoidance system is different with material, and the difference of initial boundary condition etc. and obvious difference.Therefore, be difficult to directly reduce a simple formula and finish concrete calculating.
The time how to prevent to clash into dangerous problem for China's bridge in design and construction, at present general bridge design all can have special protection and shockproof coefficient requirement to bridge pier, but does not international and domesticly all have a unified design specifications, is an international difficult problem.Because at present China does not still have the unified standard of bridge-collision-avoidance design, the crashproof design of bridge is entirely with relevant expert's experience.The navigation requirement that generally to be the deviser propose according to related management department such as maritime affairs, port boat and bridge investor according to empirical design, is passed through through relevant experts' evaluation again.Because the calculating prematurity still of collision avoidance system has directly influenced the judgement of collision avoidance system being used validity.
Summary of the invention
The present invention is intended to provide a kind of ship-bridge collision experiment pool, can the design and use of bridge anti-collision device being judged more reliably and more reasonably.
Ship-bridge collision experiment pool of the present invention, comprise the pond, the both sides, pond are provided with long rails, ship model towing gear crossbearer is located on two long rails, comprise vertical walking dolly, cross track and horizontal mobile device, vertically walking dolly places on two long rails, can carry ship model pull device integral body longitudinally track move, vertically walking dolly is put on the shelf and is provided with cross track, horizontal mobile device places on the cross track, can move along cross track, the horizontal mobile device below is equipped with the stationary installation that is used for fixing ship model, and described stationary installation is rotatable.
Ship-bridge collision experiment pool of the present invention is during test, earlier
Require to make ship model, bridge pier model and simulation collision avoidance system in proportion according to bridge, collision avoidance system and navigation ship typeThen, the bridge pier model is installed in the pond, the anti-assembling device of simulation is installed on the bridge pier model, and on simulation bridge pier and the anti-assembling device of simulation, install and measure impact, the isoparametric measurement mechanism of deflection.To test ship model on the stationary installation below the horizontal mobile device of ship model towing gear installs, the direction of rotary fixing device adjustment test ship model ahead running, the lateral attitude of mobile horizontal mobile device control ship model, control the headway of vertical walking dolly movement velocity control ship model, can simulate boats and ships under possible multiple situation, as the simulation collision avoidance system of different speed, different navigation direction, different angle impact simulation bridge pier, the overall process of actual measurement collision.Obtain the size of ship impact force, collision avoidance system is subjected to impact by the size of the deflection of impact site and energy dissipating (or energy-absorbing) amount and last bridge pier data such as size by measurement mechanism and thing mould test Computerized analysis system according to the measurement data analysis that the simulation ship hits the bridge test.According to the result of data that record and test, the validity of decidable collision avoidance system.With the above-mentioned numerical value that obtains by the ship-bridge collision experiment pool physical experiments with set up mathematical model and compare with the numerical value that the computing machine finite element simulation calculates, more reliably and more reasonably the validity of collision avoidance system use is judged.
Description of drawings
Fig. 1 is the floor map of ship-bridge collision experiment pool of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to synoptic diagram.
Specific embodiments
A kind of ship-bridge collision experiment pool as Fig. 1, comprises rectangle pond 1, and the both sides, pond are provided with long rails 2, and ship model towing gear 3 crossbearers are located on two long rails 2; Ship model towing gear 3 two ends are separately installed with vertical walking dolly 31, vertically walking dolly 31 can carry its ship model towing gear integral body longitudinally track 2 move, cross track 33 is set up on two vertical walking dollies, horizontal mobile device 32 is loaded on the cross track, can move along cross track, it can be the slide block that places on the cross track, also is the horizontal walking dolly that places on the cross track; The below of horizontal mobile device 32 is equipped with and is used for fixing the stationary installation 4 of testing ship model 5, and described stationary installation is rotatable, and its adjustable solidating fixes on the direction of the ahead running of the test ship model 5 below it; Vertically walking dolly, horizontal mobile device and stationary installation can be controlled its action by computer control system by operation bench 6.
When horizontal mobile device is horizontal walking dolly, the vertical and horizontal movement velocity of control desk may command ship model, its bump mode that can simulate is more, and the validity that can further use collision avoidance system be judged.
Corresponding water level control apparatus is set in the pond, so that according to the water level in the needs control pond of test, water level control apparatus can be fluid level controllers such as Floating Ball Liquid Level by-pass cock, it is prior art.
Inner top, pond is provided with makes water flow machine and wave making machine accordingly, so that the wave of mimetic surface and water velocity.Describedly make water flow machine, wave making machine is prior art, has been widely used in the laboratory as wave simulation equipment.
The pond interior extremity is provided with corresponding suction ripple, energy dissipator, so that absorb the wave of the water surface and the energy of water velocity, eliminate the wave of the opposite direction water surface and the effect of water velocity, solve the influence of the reflection of ripples in the pond, improve the precision of emulation experimental result.Described suction ripple, energy dissipator can be wave suppression arrangement commonly used such as wave absorption net cage, wave absorption sponge.
Before the test, earlier
Require to make test ship model 5, bridge pier model 7 and simulation collision avoidance system 8 in proportion according to bridge, collision avoidance system and navigation ship typeThen, bridge pier model 7 is installed in the pond, the anti-assembling device 8 of simulation is installed on the bridge pier model, and on simulation bridge pier 7 and the anti-assembling device 8 of simulation, install and measure impact, the isoparametric surveying instrument of deflection (as sensor etc.); And at the horizontal walking dolly of the horizontal mobile device 32(of ship model towing gear 3) stationary installation 4 of below will test ship model 5 and install, and the direction of ship model 5 ahead runnings is tested in the rotary fixing device adjustment; During test, regulate the water level in water pool degree of depth by the requirement priming level regulating device of testing program, and start and make water flow machine and wave making machine, by the wave and the water velocity of testing requirements mimetic surface by control operation bench 6; And start to inhale ripple and energy dissipator absorbs the wave of the water surface and the energy of water velocity, keep from top, pond single direction come wave and current; Start ship model towing gear 3, vertical walking dolly 31 movement velocitys of control ship model towing gear, headway by testing requirements control test ship model, simulate actual boats and ships under possible multiple situation, as the simulation collision avoidance system of different speed, different angle impact simulation bridge pier, the overall process of actual measurement collision.
After the test, obtain the size of ship impact force, collision avoidance system is subjected to impact by the size of the deflection of impact site and energy dissipating (or energy-absorbing) amount and last bridge pier data such as size according to the measurement data analysis that the simulation ship hits the bridge test by measurement mechanism and thing mould test Computerized analysis system.According to the result of data that record and test, the validity of decidable collision avoidance system.With the above-mentioned numerical value that obtains by the ship-bridge collision experiment pool physical experiments with set up mathematical model and compare with the numerical value that the computing machine finite element simulation calculates, more reliably and more reasonably the validity of collision avoidance system use is judged.
Claims (6)
1. ship-bridge collision experiment pool comprises the pond, and the both sides, pond are provided with long rails, and ship model towing gear crossbearer is located on two long rails, comprises
TwoVertical walking dolly, cross track and horizontal mobile device,
Described twoVertically walking dolly places on two long rails, can carry ship model towing gear integral body longitudinally track move,
TwoVertically walking dolly is put on the shelf and is provided with cross track, and horizontal mobile device places on the cross track, can move along cross track, and the horizontal mobile device below is equipped with the stationary installation that is used for fixing ship model, and described stationary installation is rotatable.
2. ship-bridge collision experiment pool according to claim 1 is characterized in that: described horizontal mobile device is horizontal walking dolly.
3. ship-bridge collision experiment pool according to claim 1 is characterized in that: in the described pond wave making machine is installed.
4. ship-bridge collision experiment pool according to claim 1 is characterized in that: be equipped with in the described pond and make water flow machine.
5. ship-bridge collision experiment pool according to claim 1 is characterized in that: the pond interior extremity is provided with inhales ripple and energy dissipator.
6. ship-bridge collision experiment pool according to claim 1 is characterized in that: water level control apparatus is installed in the pond.
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| CN 201010213892 CN101865761B (en) | 2010-06-30 | 2010-06-30 | Ship-bridge collision experiment pool |
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| CN 201010213892 CN101865761B (en) | 2010-06-30 | 2010-06-30 | Ship-bridge collision experiment pool |
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| CN101865761B true CN101865761B (en) | 2011-12-28 |
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Cited By (1)
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| FR2619447B1 (en) * | 1987-08-13 | 1989-12-15 | France Etat Armement | DEVICE FOR MEASURING THE WAKE OF A NAVIGATION MODEL |
| SU1587365A1 (en) * | 1988-10-28 | 1990-08-23 | Предприятие П/Я Г-4126 | Wave suppressor for experimental water pool |
| CN1257407C (en) * | 2004-04-14 | 2006-05-24 | 中国科学院力学研究所 | Wave flow-structural object-seabed power coupling experimental simulating method and appts. thereof |
| CN100385223C (en) * | 2005-08-08 | 2008-04-30 | 苏州试验仪器总厂 | Linear acceleration and impact testing machine |
| CN201731988U (en) * | 2010-06-30 | 2011-02-02 | 广州广船国际股份有限公司 | Ship-bridge collision testing water tank |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107036784A (en) * | 2017-04-26 | 2017-08-11 | 哈尔滨工程大学 | Cable type intelligence seaworthiness instrument apparatus |
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